Departmental Papers (ESE)

Document Type

Journal Article

Date of this Version

October 2006


Copyright American Physical Society. Reprinted from Physical Review Letters, Volume 97, Issue 15, Article 157403, October 2006, 4 pages.
Publisher URL:


In this Letter, we demonstrate theoretically that electromagnetic waves can be "squeezed" and tunneled through very narrow channels filled with ε-near-zero (ENZ) materials. We show that the incoming planar wave front is replicated at the output interface, independently of the specific geometry of the channel. A closed analytical formula is derived for the scattering parameters of a particular class of geometries. It is discussed that in some cases the isotropy of the ENZ material may not be an issue. A metamaterial realization of an anisotropic ENZ material is suggested and numerically studied.



Date Posted: 07 December 2006

This document has been peer reviewed.